1 for each cylinder for a total of 4. 2 are visible after taking the cover off the top of the enging. The other 2 are located UNDER the coils. Take the 2 bolts holding the coils off and lift the coils. The 2 plugs are there. Replace the boots when changing them. Hyundai Part # 27311-3820 (Cap Ignition) $15.73 each. 2 Required was $31.46 The spark plug wire set from Autozone only includes 2 wires. These are the ones visible on top of the engine.
You cannot use the 2004 Hyundai Sonata body parts on a 2003 Hyundai Sonata.
The 2004 Hyundai Sonata has 16 valves.
The 2004 Hyundai Sonata has a 5-speed manual.
The 2004 Hyundai Sonata is a gas-powered vehicle.
The 2004 Hyundai Sonata has an inline 4 engine.
The 2004 Hyundai Sonata's turning circle is 34.4 ft..
The 2004 Hyundai Sonata runs on regular unleaded.
The height of the 2004 Hyundai Sonata is 4 ft. 8 in. (56 in.).
The 2004 Hyundai Sonata has double overhead cam (DOHC).
The curb weight of the 2004 Hyundai Sonata is 3181 lbs..
The 2004 Hyundai Sonata is 15 ft. 6.9 in. (186.9 in.) long.
The 2004 Hyundai Sonata has 37.6 in. of rear head room.